When light enters a denser medium from a rarer medium, its speed generally

Options

  • A. Increases
  • B. Decreases
  • C. Remains unchanged
  • D. Becomes zero
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. Decreases

Detailed Explanation

The speed of light decreases when it enters a medium with a higher refractive index.